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Explain what is the equation for conductivity and the relative conductivities for metals, semiconductors, and insulators?Explain what are the band gaps and corresponding material types (e.g. insulator) of diamond, silicon, germanium, and lead?
A 0.120M solution of an enantiometrically pure chiral compound D has an observed +0.18 in a 1-dm sample container. The molar mass of the compound is 136.0g/mol. What is the specific rotation
we use 1 g of unknown acid added with 120 mL of distilled water ,the solution filtered , then we took 25 mL of this unknown acid for titration. we use NaOH base for titration
A minute sample of AlCl3 is analyzed for chlorine. The analysis reveals that there are 24 chloride ions present in the sample. How many aluminum ions must be present in the sample
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation.
The thermochemical equation representing one process used for the synthesis of ammonia involves the equilibrium shown, N2(g) + 3 H2(g) 2 NH3(g) For this reaction, DH° = -92.2 kJ, DG° = -33.4 kJ. All things considered, one concludes that Question 1..
A 270- flask contains pure helium at a pressure of 755 . A second flask with a volume of 485 contains pure argon at a pressure of 727 torr.
Develop a detailed calorimetric method for determining the temperature of the warm water sample.
Explain how mass effects act to lower the carbonyl frequency, as well as how inductive and hyperconjugation effects act to raise the carbonyl frequency
If antique brass is 30.0% zinc and 70.0% copper, how many grams of antique brass can be made from 18.0 grams of zinc and 35.1 grams of copper
Assuming the earth is a perfect sphere with a radius of 6371 km and an atmosphere that extends from the surface to an altitude of 20 km determine the number of metric tons of the elements/compounds+
3 moles of an ideal gas are compressed isothermally from 60 to 20L using constant external pressure of 5 atm. Calculate q, w, deltaE and deltaH
Choose an appropriate buffer system to make a buffer of ph=5.00. Calculate the appropriate composition in terms of the weak acid and conjugate base
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